Mike L
Senior Member
Serial number is 508185. On the bottom of the main control valve there is a section called the propel flow combine valve. Machine will break the cover to the spool in about 10 minutes of run time. Owners have put 2 of them on and I was there for the third yesterday. From what I understand it provides extra flow when tracking and operating boom/bucket. It has a pilot line going into the cover and pushes the spool into the mcv and my theory is that when it returns to the original position it slams the cap and breaks it. Nothing on the spool looks wrong and the parts breakdown shows a blurry something that resembles a washer but of course it’s not there and is obsolete. The washer looked like it would add an extra little bit of cushion before the spool could hit cap. I wish I had gotten a pic of the spool but I didn’t. Has anyone seen this before? I did get a pic of the cap. All of them have broken identically.